Draw-bar and draft-yoke connection.



G. A. JOHNSON.

DRAW BAR AND DRAFT YOKE CONNECTION.

APPLIOATIONIILED SEPT. 23, 1910.

Patented Feb. 11, 1913 2 SHEETS-SHEET 1.

INVENTOR gear neflfi/maon wwla G. A. JOHNSON.

DRAW BAR AND DRAFT YOKE CONNECTION.

APPLICATION FILED SEPT. 23, 1910.

Patented Feb. 11, 1913.

2 SHEET S-SHLET 2.

orally in use.

'tudinal section, of a A. JOHNSON, 02? CHI GAG'U, ILLINGIS, ASSIGNQR T0WILLIAM H. MINER, 0F

' CHIGAGG, ELL-INDIE.

DBfi-Vf-EAB AND DRAFT-10KB GQNNECTION.

Specification of Letters Patent.

Patented Feb. ii, 1913.

Itppliatien filed Septcmbcrfilfi, 1910. Serial No. 583,352.

To (1. /71 whom it may concern Be it known that I, GEORGE A. .lonnson, acitizen of the United States, residing in Chicago, in the county of Cookand State of Illinois, have invented a new and useful improvement inDraw-Bar and Draft-Yoke Connections, of which the following is aspecification My invention relates to improvements in draft rigging forrailway cars, and more particularly to draw bar and draft yokeconnect-ions.

The object of my invention is to provide a draw-bar and yoke connectionof simple and etiicient construction, in which the connecting rivetswill have a double shear action instead of a single shear action, as inthe customary constructions heretofore gen- "Io practically accomplishthis object or result, and herein my invention consists, I provide thedraw bar with upper and lower webs or faces between which each limb ormember of the draft yoke is embraced, and through which the connectingrivets extend so that the connecb ing rivets will have to be sheared infour places, or at both the upper and lower faces ofeach limb of thedraft yoke before the draft yoke can be separated from the drawbar, thusvery materially increasing the effective'strength of the rivets and theconnection as awhole.

My invention further consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownand described and more particulerly set forth in the claims.

In the accorn an 111 drawin formin a part of this specification, Figure1 is a side.

elevation, partly in central, vertical, longi draw-bar and draft yokeconnection embodying my invention.

Fig. 2 is a plan view, partly in ho-rizontat section on line 2-2 ofFig. 1. Figs. 3 and 4; are cross sections on lines 3-3 and respectivelyof Fig. 2. Fig. 5 is a detail, longitudinal, sectional view, showing amodificatidn in which two short rivets are employed in place of eachlong rivet. Fi 6 is a similar sectional View showing anothermodification in which the abutment shoulders on the draw bar for theends of the draft yoke members to engage are omitted. Fig. 7 is a crosssection on line 7? of Fig. 6. tional view, showing; another modificationin which the ends of the draft yoke have gibs to engage coiipcratingabutment shout ders on the draw-bar, and in which filler plates areemployed above thenpperand be:

low the lower limb of the draft yoke, and Fig. 9 is a cross-section online of Fig. 8. In the modifications shown in Figs. to 9 inclusive onthe drawing, the rear portion of the yoke including the t-hiinble '65has been omitted in order to prevent crowding of the drawing.

in the drawing, 1 represents a coupler draw bar and 2 a draft yoke of arailway car draft rigging, and 3 a thirnble or tiller block between theupper and lower limbs of the draft yoke. .The draw l is furnished at itsrear end with a pair of slots or sockets 5 to receive the ends of theupper and lower limbs of the draft yoke,

thus forming an outer web '6 and inner web or face 7 between whicheachlinih 8 of the draft yoke is embraced and through which theconnecting rivets 9 extend, so that the rivets will have av double shearaction for each limb of the draft yok Gr, so that, in other words, therivet will require to be sheared both at the upper and lower faces ofeach limb of the draft yoke before the draft yoke can separate from thedraw bar. The draw bar is preferably also furnished with abutmentshoulders 10 for the extreme ends 11 of the draft yoke limbs, to abutagainst.

The thimble or filler block 3 which fits 99 between the two intermediatefollowers in a tandem spring draft rin ing furnished with sockets orslots 12 r the upper and lower limbs of the draft yoke to through, thusforming an outer l3 and .an inner web or face l4 bet cen which each limbof the draft yoke is embraced through which. thimble conn etin. 15 pass;thus giving these'rivets also his shear action and much P'Z'Bliifil'etle strength t an in the constructions heretofore in use. in themodification shown in Fig. liftwo short rivets 16 are substituted for.some the long rivets 9, thus further the clamping action of the rivetsindraw- Fig; 8 IS a longitudinal sec- 55 increasing to 5 ing snuglytogether the Webs or faces 6 and 7 of the cast steel or malleable irondrawbar between'which each limb of the draft yoke is embraced.

In the modificationshown in Figs. 6 and 7, the abutment shoulders 10 areomitted, the horizontal slots 5 extending through the enlarged rear endof the draw-bar, so that the ends of the draft yoke limbs may projectthrough such slots if desired. This construction enables the outer Webs6 to be more readily drawn snugly against the draft yoke limbs by theconnecting rivets 9.

In the modification shown in Figs. 8 and 9, the draft yoke limbs arefurnished with gibs or flanges 17 to engage the shoulders 18 of thedraw-bar and the horizontal slots 19in the draw-harare enlarged toaccommodate said. or flanges 17 and removable filler plates 20 areemployed through. which the connecting rivets pass to cause thenecessary snug fit and clamping action of the Webs 01' faces 6, 7 of thedraw-bar on or against the limbs of the draft yoke.

1. The combination with a draft yoke, of

a connecting thimble having slots for the limbs of the draft yoke .topass through, sub stantially as specified,

'2. The combination. With a draft-yoke, of a draw-bar having enlargedlongitudinal slots at its rear end to receive the limbs of thedraft-yoke, and connecting rivets ex tending through the inner and outerwalls of said slots and through the draft yoke limbs, said draft yokelimbs having flanges at their extreme ends, said slots b 21g employed toaccommodate said hang removable filler plates fitting in said eniaigedslots, substantially as specifu GEORGE A. JOHFIISON.

Witnesses PEARL ABRAMS, H. M. MUNDAY.

